Season 4 of HBO's monster hit, it surpassed the 2002 season of "The Sopranos" as the network's most popular series to date?finds the status quo returning to King's Landing as Joffrey (Jack Gleeson) prepares to marry Margaery (Natalie Dormer), though it may be upset by the hot-blooded Oberyn Martell (Pedro Pascal), a royal-wedding guest who's not shy about wanting revenge on the Lannisters. Elsewhere in the Seven Kingdoms, Jon Snow (Kit Harington) tries to warn the Night's Watch that an invasion by a massive wildling army is imminent; the Hound (Rory McCann) wanders the countryside with Arya (Maisie Williams), hoping to cash in on keeping a Stark alive; Bran (Isaac Hempstead-Wright) follows his visions of the Three-Eyed Raven; and Tyrion (Peter Dinklage) finds the deck stacked against him in a trial for the ages. Meanwhile, across the Narrow Sea, Daenerys (Emilia Clarke) makes it her mission to free slave populations from their masters, but finds her growing dragons difficult to control.